Revert: "Do not razor when in check"

It is slightly weaker after 500 games. Keep the
check on mate values.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>

diff --git a/src/search.cpp b/src/search.cpp
index c32171ca47c2ec5a9bc49a5cb1707e0a9a254f61..c3f96e13de0e1b69e1034507524eaec542b8991f 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1236,8 +1236,7 @@ namespace {
         }
     }
     // Null move search not allowed, try razoring
-    else if (   !isCheck
-             && !value_is_mate(beta)
+    else if (   !value_is_mate(beta)
              && (  (approximateEval < beta - RazorMargin && depth < RazorDepth)
                  ||(approximateEval < beta - PawnValueMidgame && depth <= OnePly)))
     {